What does the central locking do? How to unlock a car with central locking? If your car is fitted with remote central locking another layer of problems is added.
Issues like this can be due to something as simple as a faulty remote, other times it’s the remote control unit inside the car. Often, though, it’s really just the battery in the remote key that has run out.
Insert key into ignition and turn to ignition and back times in quick succession.
You will then hear a chime which indicates you are in the central locking programming mode. I only needed to press the lock ) button on the remote. A bad switch or worn wiring loom could cause a loss of connection.
Some common problem areas include the wiring loom that feeds through the door to the window switches, as well as the central locking switch, which tends to corrode over time. Based on where VAG-COM indicates your issue is coming from, check both the wiring and the switch. This would tend to indicate a loose connection, bad earth (most likely) or duff lock alarm central unit.